The following products are affected by the vulnerabilities that are described in this advisory:

Cisco Unified Communications Manager 7.1(x)

Cisco Unified Communications Manager 8.5(x)

Cisco Unified Communications Manager 8.6(x)

Cisco Unified Communications Manager 9.0(x)

Cisco Unified Communications Manager 9.1(x)

Note: Cisco Unified Communications Manager version 8.0
reached the End of Software Maintenance on October 23, 2012. Customers
using Cisco Unified Communications Manager 8.0(x) versions should
contact their Cisco support team for assistance in upgrading to a
supported version of Cisco Unified Communications Manager.

Cisco Unified
Communications Manager 7.1(x) contains a vulnerability that could allow
an unauthenticated, remote attacker to cause a DoS condition on an
affected device. The vulnerability is due to improper error handling . An attacker could
exploit this vulnerability by sending malformed registration messages, resulting in a DoS condition on an
affected device. This vulnerability is documented in
Cisco bug ID CSCuf93466 (registered
customers only) and has been assigned the Common Vulnerabilities
and Exposures (CVE) ID CVE-2013-3459. This vulnerability affects
only Cisco UCM versions 7.1(x).

Cisco Unified
Communications Manager 8.5(x), 8.6(x), and 9.0(x) contain a vulnerability that
could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. The vulnerability is due to insufficient limiting of traffic on certain
UDP ports. An attacker could exploit this vulnerability by sending UDP
packets at a high rate to certain ports on an affected device, resulting in a DoS condition on the
affected device. This vulnerability is documented in Cisco bug ID CSCub85597 (registered customers only) and has been assigned the CVE ID CVE-2013-3460.

Cisco Unified
Communications Manager versions 8.5(x), 8.6(x) and 9.0(1) contain a
vulnerability that could allow an unauthenticated, remote attacker to
cause a DoS condition on an affected device. The vulnerability is due to insufficient rate limiting of traffic on the Session Initiation Protocol (SIP) port. An attacker could exploit this
vulnerability by sending UDP packets at a high rate to port 5060 on an
affected device. A sustained attack could allow the attacker to cause a
DoS condition on the affected device. This vulnerability is documented in Cisco bug ID CSCub35869 (registered customers only) and has been assigned the Common Vulnerabilities and Exposures CVE ID CVE-2013-3461.

Buffer Overflow Vulnerability

Cisco
Unified Communications Manager 7.1(x), 8.5(x), 8.6(x), 9.0(x) and 9.1(x) contain a vulnerability that could
allow an authenticated, remote attacker to cause a buffer overflow on
an affected device. The vulnerability is due to insufficient bounds checking. An attacker
could exploit this vulnerability by overwriting an allocated memory
buffer on an affected device. An exploit could allow the attacker to
corrupt data, disrupt services, or run arbitrary commands. This vulnerability is documented in Cisco bug ID CSCud54358 (registered customers only) and has been assigned the CVE ID CVE-2013-3462. This vulnerability affects Cisco UCM versions 7.1(x) through 9.1(1x).

Successful exploitation of these vulnerabilities may result in disruption of services, modification of system data, or execution of arbitrary files. Continued exploitation may result in a DoS condition.

When considering software upgrades, customers are advised to consult the Cisco Security Advisories, Responses, and Notices archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Release" column of the following table:

*Note: Cisco Unified Communications Manager Version 8.5(1)su6 is targeted for release in mid-September 2013. Customers running Cisco Unified Communications Manager Version 8.5 are encouraged to upgrade to 8.6 for complete coverage for all vulnerabilities listed in this advisory.

In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

Cisco has released software updates that address the vulnerabilities described in this advisory. Prior to deploying software, customers are advised to consult their maintenance providers or check the software for feature set compatibility and known issues that are specific to their environments.

Customers with Cisco products that are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers, should contact that organization for assistance with the appropriate course of action.

The effectiveness of any workaround or fix depends on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Because of the variety of affected products and releases, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed.

Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through Cisco Authorized partners, resellers, and distributors (authorized third-party vendors) but are unsuccessful in obtaining fixed software through their point of sale should obtain software patches and bug fixes by contacting the Cisco Technical Assistance Center (TAC):

+1 800 553 2447 (toll free from within North America)

+1 408 526 7209 (toll call from anywhere in the world)

e-mail: tac@cisco.com

Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a software patch or bug fix. Customers without service contracts should request a software patch or bug fix through the TAC.

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